Does the United Kingdom have sufficient geological storage capacity to support a hydrogen economy? Estimating the salt cavern storage potential of bedded halite formations

Green ethylene production in the UK by 2035: a techno-economic assessment

“…94 The price of domestically produced green H 2 is based on the LCOE using PEM electrolysers with an efficiency of 1.3 MW h el MW h H 2 ,HHV −1 , and adding an extra 36% for capital and operating costs of the electrolysers. 75 Given the proximity of underground salt caverns to the Wilton production site 95 and existing plans to build a hydrogen pipeline network in the North East of England by 2030, 96 additional charges for transport and storage are henceforth neglected. 97,98 For the ethylene product to be considered green, only CO 2 from DAC is deemed a suitable feedstock.…”

Socio-technical barriers to domestic hydrogen futures: Repurposing pipelines, policies, and public perceptions

“…At present, hydrogen pipelines span less than 16,000 km globally [26,174] compared to around 3,000,000 km for conventional gas pipelines [158], highlighting the extreme experience deficit for hydrogen projects. Unlike renewable energy projects such as wind farms and concentrated solar-thermal power (CSP) which have benefited from learning-by-doing (LBD) 27 [205], the economics of hydrogen pipelines are volatile and may fail to reap cost reductions over time [206].…”

“…By 26 Cost improvements are anticipated from higher efficiencies, less degradation, higher availability, larger cell sizes, higher operating pressure, and less critical material use together with overall reduced material use [193]. 27 Whereby experience with a technology drives down the unit cost of production over time [402]. 28 Compared to Saadi et al [210], DeSantis et al [194] calculate a lower pressure drop for hydrogen transport relative to natural gas, therefore, the volumetric flow is higher in the hydrogen pipelines.…”

“…As an energy vector with multiple applications across a wide range of energy systems [26] 3 hydrogen is highly coveted for its climate change mitigation potential [27,28]. Critically, hydrogen may provide largescale electricity storage and load-balancing services [29].…”

Transition to a low-carbon building stock. Techno-economic and spatial optimization of renewables‑hydrogen strategies in Spain

“…For this purpose, several case studies are evaluated combining large-scale renewable energy production with hydrogen chain alternatives. Although liquid [39] and solid [40]hydrogen storage are being considered to improve the volumetric density of hydrogen, these configurations include different gaseous hydrogen storage methods such as steel tanks, underground storage in salt caverns [41], hydrogen pipelines, and their combinations [42] apart from two alternatives of power retrieval in multi-MW PEM fuel cells [43] or small/ medium-scale cogeneration fuel cell units deployed in buildings [44]. The analysis on a country basis will provide greater robustness and detail to the results obtained, apart from enabling their comparison with the objectives defined by the long-term decarbonization strategy of Spain [45].…”